Mitering-machine.



J. M. PETZER.

MITERING MACHINE.

APPLIGATION FILED JAN.15,1908.

901,699. Patented 0ct120,1908.

2 SHEETS-SHEET 1.

@lnuenfor- V aftouun o J. EFETZEB. MITERIN MACHINE.

APPLIOATION rum) JAN.1 5,1908.

Patented Oct. 20, 1908.

2 SHEETS-SHEET 2.

lvwentoz (ii/2W2? l/Vlhmooao attained,

JUHNM. FlliZlEll, Oi MADISON, WISCONSIN.

lilo. 901,699.

Ewpeciztieetion oi llietters Patented. Oct. 20, 1908.

Application filed Jnnuery'lfi, 1902i. ficrlel No. l11.016.

To all wiz on'z it may concern:

' Be it known that l JOHN M. Forum, a citi zen oi the United hunter;residing at Mmllson, in the county of Dane and State of ll iscousin haveinvented a new and useful Mitering-l vlachine. of which the following isa. specification. This invention has reference to improve ments inmitering machines, and more perticulnrly with reference to uni-chinesusing a circular snwns a cutting tool which machine iney-he used notonly for the purposes of. cutting Intters but by the substitution of acircular rip-sew for the circulur cross cut saw used in niitering, themachine may be adapted to operate nsan ordinary circular rip s21 wmachine.

in accordance with the present invention there is provided e. saw tablewith a circular saw arbor arranged to be driven by power or it need heby hand, and this circular saw table is provided with adjustableguideweys so that when it is desired to utilize the machine for ripsawing, then by the placing of a su table circular rlp saw on the arbornew tcrinl may be ripped in the usual manner.

' There is also provided in conjunction with the rip saw tnhl-c twotracks of unequal length, the track which is the nearer to the rip sawbeing shorter and these two tracks constituting o bed upon which ismounted for longitudinal movement a table having clumping means forholding the material to be cut- :it right angles or at, any other angleand constituting the initcring table. This loitering table is adjustableto any desirable angle to the sew and is movable as a whole ntrnllcltothe saw so that material secured to the table may he nesented with itsaw at any desired angle. l urtherinore, the mitering table isreversible so that some nmteriuls which cannot be turned over and so cuton the reverse miter may he cut by reedjusting the table to he presentedto the saw at oppo site angles.

The invention will-he best understood by u consideration of thefollowing detail description taken in connection with the accompanyingdrawings forming pertof this specification, and in which drawin llinurcl is a plnn view oi combined rip saw and niitcring tahlc. hi is crosssection through the mitering tnhle bed and also tl'li'ough the niitcringtable. and Fig. 3 a bottom plan view of the nitering table with partsomitted.

the

Referring to the drawings there is shown :4. table 1 which constitutesthe rip sew tnble, :ind this is supported upon the usual stand. notshown. since the table itself and the stand unity he o'lf the ordinaryconstruction. This table is provided with u sew arbor 2 extend lugunderneath the table, and on one end of the saw 'snhor is e pulley 3 andthe other end carries t circular saw l: which may be a cross cut sawtor-initcring purposes or a rip saw for ripping purnoses. host onthetahle-are two links 5 pivoted :it one end to the table and he otherend carrying n guide strip 6 being pivoted to the latter so that thestrip may be adjusted to or from the saw 4 and still maintain itsparallelism thereto; order to-efi'ect this adjustment of the strip 6 th.provided a link 7 pivoted zit one end strip (3 and throughout thegreater por' tion of its length provided with :1 longitudinal slot. 8through which there passes a stud t) rising from the table '1. andreceiving a. clamp screw 10, by. means of which latter the link 7 may besecured at any point of adjustment and thus, together with the links 5,will hold the strip 6 firmly in position against. accidei'itnldisplncmuen-t. The links 5 and 7, together with the strip 6, may bereadily removed from the table so that the latter is left freeandunobstructed when so desired.

Extending laterally away from the saw side oi? the table 1 are twosupporting members 11., ll. spaced apart about the length of the table,and these members, which are mounted upon legs 12, which may be similarto the supporting; legs of the saw table, serve as supports for rails 13and 14, said rails heing parallel to the saw side of the table 1. Therail 13 is i'xoarthe sew While the rail 14 is removed tllcrefroin. Theserails receive undercut channel irons 15. 16. upon which are supportedthe miter table 1?. The channel iron 133 has extending; upward therefromn pin 18 terminating in the head 1!) countersunl: in the table 17, andinterposed between this table and. the top of the channel. iron 15 thereis a. washer 20. The other channel iron l is connected to the table 17by means of c. l'lttlli an expanded heed inevehle in a. loiin inidnnilly;lisposcd undercut channel formed in the bottom of the table 17, whichletter may. for convenience of manufacture. he made in two parts, asindicated, or may be otherwise constructed. The table 1.7 is separatedfrom the channel iron l6 by e dish 24.

The relation between the rails or tracks 13 and 14 is fixed, therotative movement of the table 17 about the pins 18 and 21 or,considering these pins as fixed to the channel irons or carriages and16, then about the axis of these pins, must result in a change ofrelation between one or the other of the pins and the table. The pin 18is in fixed relation to the table other than the relative rotativemovement, while the other pin 21 is movable longitudinally with relationto the table because of the undercut slot 23. Fast on the carriage 16 isa side extension 24, and to this extension there is connected a link 25having throughout the greater portion of its length alongitudinal slot26, and extending through this slot is a clamp screw 27 enter- 7 ing asuitable nut formed in the bottom of the table 17, there being a washer28 interposed between the link 25 and the bottom of the said table 17.By means ofthis link the relation of the table 17 to thecarriages 15 and16 is adjusted and thereby the angular relation of the table to thelongitudinal movement thereof upon thetraclts 13 and 1 1 is fixed. Theextent of adjustment is sulficient to permit the table 1.7 to be set atright angles to the line of travel of the table or at the most acuteangle thereto desired.

The back of the table is formed by a longitudinal flange 29 ot'sutiicient height 'to act as an abutting plate for the thickest materialto be used upon the device. 15xtending laterally through the upperportion of the table are undercut slots 30 receiving clamp blocks 31under the control of ad justing screws extending through suitable nutsin the table and terminating on the side remote from the flange 2.) inhand wheels 33. 7

Now, assume that it is desired to cut some material square oti'. Thenthe table 17 is set by means of the clamp screw 27 and link 25 so as tobe at right angles to the line of travel of the table along the tracks13 and 14 and the material to be cut is clamped between the blocks 31and the back plate 29 of the table. Suppose now that it is desirable toout some material at a miter, then by means of the link 25 and the clampscrew 27 the table 17 is adjusted to the particular angle desired andthere clan'iped. The material is secured as before on the table andpresented to the saw by sliding the'whole table 17 up to the saw, theangle of out being preserved. it it is desired to cut at an oppositeangle, then the table may be adjusted so as to be presented to the sawat such opposite angle. In order to bring the material close as may beto the saw that end of the table 17 adjacent to the saw is beveled, asshown at 34, on each side of a-right angle portion 35.

\Vhat is claimed is 1. A combined rip and mitering structure composed ofa rip saw table having an adjustable guide for the material to beripped, a side extension thereof on the saw side of the table, spacedtracks mounted on said side extension and parallel with the saw side ofthe table, and a mitering table mounted for longitudinal movement on thetracks, said mitering table being adjustable rotatively with relation toone track and in the direction of the length of said table with relationtothe other track.

2. A mitering structure comprising a circular saw arbor, spaced tracksparallel with the face of the saw carried by the arbor, and a mitcringtable adjustable as a whole rotatively on the track adjacent to the sawand longitudinally with relation to the track remote from the saw, saidtable being mounted for movement along said tracks when in any positionof adjustment relative to the same.

A mitering structure comprising two tracks of different length theshorter of which is adjacent to a mitering saw, a carriage on eachtrack, a mitering table supported on the carriages; pivotal connectionsbetween the carriages and the table, and means for longitudinaladjustment of one of the pivotal connections with relation to the table.

4. In a mitering structure, two parallel tracks of difl'erent length, asaw arbor for a circular saw adjacent to the shorter track, a miteringtable, carriages for the same mounted on the track, pivotal connectionsbetween the carriage on the shorter track and table, a longitudinalundercut slot in the table, pivotal connections between the carriage andthe longer track and the table, said pivotal connections comprising aheaded pin entering the undercut slot in the table, a slotted linkpivotally connected to the carriage on the long track, and a clampingmeans extending through the slot in'the link and engaging the table andserving to secure the table in adjusted relation to the carriages andtrack.

In testimony that I claim the foregoing as my own, 1 have hereto afiixedmy signature in the presence of two witnesses.

' JOHN M. FETZER.

Witnesses THOMAS REYNOLDS, GRACE D. MEYERS.

